Which of the following HDFS commands can be used to check the integrity of data blocks?

Flume supports cascading multiple Flume, and at the same time, the cascade node supports old data replication.

Assuming that the data volume is about 200GB and the maximum fragment capacity is limited to 30GB, what is the appropriate design for the maximum number of fragments?

The capacity scheduler is allocating resources. There are two queues Q1 and Q2 at the same level, and their capacities are both 30. Among them, Q1 has used 8 and Q2 has used 14, and resources will be allocated to Q1 first.

Hive does not check whether the data conforms to the schema when it is loaded. Hive follows the schema on read (read mode). Hive only checks and parses specific data fields and schemas when it is read.